K-ON! Original Soundtrack

K-ON! Original Soundtrack (「けいおん!」 オリジナルサウンドトラック(おりじなるさうんどとらっく),K-ON! Original Soundtrack) is the first "Original Soundtrack" (OST) of the anime K-ON!. The album contains 36 instrumental songs that are used as background music during the first season of the anime. It was released on 3 June 2009 in Japan by Pony Canyon.